事件对象 · JavaScript

## 事件对象 ``` <body> <div id="box"> <input type="button" value="触发" id="btn"> </div> <script> $(function () { $('#box').on('click', 'input', function (event) { console.log(event); }) }) </script> ``` ![](https://box.kancloud.cn/ae40ef046cd2105ccbefe245f83c11fd_1644x1076.png) ## 案例 ``` <body> <div id="box"> <input type="button" value="触发" id="btn"> </div> <script> $(function () { $(document).keypress(function (event) { if (event.keyCode == 97) { $('#box').css('backgroundColor', 'red'); } else if (event.keyCode == 98) { $('#box').css('backgroundColor', 'blue'); } }) }) </script> ```